Petras is a masculine given name. It is a cognate of Peter, which is derived from the Greek word "petros" meaning "stone, rock". People with the give name Petras include:
Petras Auštrevičius (born 1963), Lithuanian politician, diplomat, civil servantPetras Balocka (born 1986), Lithuanian basketball playerPetras Ciunis (1898–1979), Lithuanian army officer, educatorPetras Cvirka (1909–1947), Lithuanian authorPetras Dirgėla (born 1947), Lithuanian authorPetras Geniušas (born 1961), Lithuanian classical pianistPetras Giniotas (born 1952), Lithuanian politicianPetras Griškevičius (1924-1987), Lithuanian-Soviet politicianPetras Kalpokas (1880–1945), Lithuanian painter and educatorPetras Karla (1937–1969), Lithuanian rower and Olympic competitorPetras Klimas (1891-1969), Lithuanian diplomat, author and historianPetras Kubiliūnas (1894–1946), Lithuanian military officer and politicianPetras Kunca (born 1942), Lithuanian violinistPetras Mantigirdaitis (????-1459), nobleman of the Grand Duchy of Lithuania and Grand Marshal of LithuaniaPetras Jonaitis Mantigirdaitis (????-c.1497), nobleman of the Grand Duchy of LithuaniaPetras Poškus (born 1935), Lithuanian politicianPetras Raslanas (born 1914), Lithuanian communist activist, politician and fugitivePetras Repšys (born 1940) Lithuanian artistPetras Rimša (1881–1961), Lithuanian sculptorPetras Šiurskas (born 1953), Lithuanian sprint canoerPetras Stankeras (born 1948), Lithuanian historianPetras Vaitiekūnas (born 1953), Lithuanian politician, former Foreign Minister of LithuaniaPetras Vileišis (1851–1926), Lithuanian engineer, political activist and philanthropist